出错时,cd 命令会报告无法改变当前目录,同时将错误消息输出到标准错误,例如 "bash: cd: /foo: No such file or directory"。如果你想要在标准输出同时输出自定义的错误提示,可以使用复合命令(command grouping[17]): cd /net || { echo "Can't read /net. Make sure you've logged in
The fastest way to find {command options|code pieces} you need Supports multiple languages and many bash commands Cloudup A tool that facilitates backing up github repositories to bitbucket If you have ever felt the fear of the github unicorn this could be your savior Furthermore you can bac...
Command Substitution 命令替換 (Command substitution) 允許以命令的輸出替換命令名。有 兩種形式: $(command) 還有`command` Bash 進行擴充套件的步驟是執行 command,以它的標準輸出替換它,並且將所有後續的 新行符刪除。內嵌的新行符不 會刪除,但是它們可能會在詞的拆分中被刪除。 命令替換 $(cat file) 可以用...
#POSIXforiin*.mp3;do[-e"$i"]||continuesome command"$i"done 如果你有使用引号[6]和避免单词拆分[7]的习惯,你完全可以避免很多错误。 注意下循环体内部的 "$i",这里会导致下面我们要说的另外一个比较容易犯的错误。 2. cp $file $target 上面的命令有什么问题呢?如果你提前知道,file和target 文件名...
"User configurable variables are in" "setupTermuxArchConfigs.bash" ". To create this file from" "kownconfigurations.bash" "in the working directory, run" "bash ${0##*/} manual" "to create and edit" "setupTermuxArchConfigs.bash" "." printf "\\n\\e[1;33m %s\\e[1;34m %s \\e[...
Command Substitution 命 令替换 (Command substitution) 允许以命令的输出替换命令名。有两种形式 : $(command) 还有 ‘command‘ Bash 进行扩展的步骤是执行 command,以它的标准输出替换它,并且将所有后续 的 新行符删除。内嵌的新行符不会删除,但是它们可能会在词的拆分中被删除。 命令替换 $(cat file) 可以...
alias name = 'command' alias name = 'command arg1 arg2' alias name = '/path/to/script' alias name = '/path/to/script.pl arg1' 举个例子,输入下面命令并回车就会为常用的clear(清除屏幕)命令创建一个别名c: alias c = 'clear' 然后输入字母c而不是clear后回车就会清除屏幕了: ...
backup, I'll edit the file. First, I remove all lines beginning with the specified parameters because I don't know how often they already occur in the file. I need to make sure that only my desired configuration exists in the end. This is the job of thesedcommand running in aforloop...
aws_secret_add_binary.sh - base64 encodes a given file's contents and saves it to Secrets Manager as a binary secret. Useful for uploading things like QR code screenshots for sharing MFA to recovery admin accounts aws_secret_update.sh - reads a value from a command line argument or non-...
Command Line Editing Improvements; Clink supercharges the command line with new input editing commands and configurable key bindings. Auto-answering of the "Terminate batch job?" prompt. and much more! Installation You can install Clink by running the setup EXE file from the releases page. Or ...